I don't know the pin configuration on a 1st gen, but on my 2nd gen, I bought a keyboard extension cable at Radio Shack. It has the correct 5 pin connector, male on both ends, and has all 5 pins connected. I cut off each end about 6", and wired on a female stereo plug. Now, if all I want to do is listen to the radio or my MP3 player, I can hook up some ear plugs, and even wear my shorty helmet.